Alarm-lock



H. L. HERVEY,

Burglar Alarm. I No. 19,295. Patented Feb. 9,1858.

HORACE L. HERVEY, OF WINDSOR, CONNECTICUT.

ALARM-LOCK.

Specification of Letters Patent No. 19,295, dated February 9', 1858.

To all whom it may concern Be it known that I, HORACE L. HERVEY, of Poquonnock parish, town of Windsor, county of Hartford, State of Connecticut,

5 have invented a new and useful Improvement in Thief-Detecting Alarm-Locks; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

To enable others skilled in the art to make and use my invention I will proceed to clescribe its construction and operation.

Figure 1, is an isometrical View. Fig. 2, a view of sliding spring knob case, showing spring knobs and case. Fig. 3, front end piece of iron case showing manner of placing the springs and tumbler of the lock. Fig. 4, view of main lock bolt piece. Fig. 5, view of the bolt lever for drawing the bolt. Fig. 6, view of same showing extra bearing point. Fig. 7 sliding notchwheel for making the different changes for draw ing the bolt. Fig. 8, sliding piece for drawing the bolt. Fig. 9, sliding catch for regulating the checking the alarm. Fig. 10, drawer slides when together. Fig. 11, cleat for slide to run in. Fig. 12, one of the slides attached to drawer.

In Fig. l, A, the back end of the iron case. T, the bottom. R, the front end. S, the side. The top and one side are represented in the drawing as being removed so as to show the works. 13, the bolt for the purpose of holding the drawer shut, when in use. f, is the connecting link between the bolt B, and the lever E: the lever E works upon a pin passing through it at it, this lever is operated by the sliding piece D, sliding upon shaft 0; the sliding piece D, is made to slide back to operate the lever E, by the means of any one of the pins L to which it should be placed in connection with, and may be placed in connection with any of the pins L, which may be desired, by turning the slide catch wheel F, in the direction desired. D, is a slide piece sliding on shaft 0, for operating the alarm alone; and is operated by the pins L, or any one of them (except the one operating the bolt 13) pressing against plate F, which presses against it, and causes it, in being pressed forward, to disengage the alarm works, and thus sound the alarm. The sliding catch wheel is kept pressed up against the inside end of the pins L, by the spring N; the

spring catch J, rests in the notch a for the purpose of keeping the sliding wheel in the position desired, these notches marked a, are all numbered so that it can be set, so that the number shall indicate which of the numbers of the sliding spring knobs will draw the bolt: the sliding catch wheel has a hole marked. 7; to allow the sliding piece to pass through it, so that it can be put in connection with the sliding spring knobs L; the sliding ratchet C, is for the purpose of stopping the alarm after it has once sounded.

The sliding spring knobs L, can be better explained by referring to Fig. 2. P, is the alarm constructed in a similar manner to those used in alarm clocks and therefore needs no particular description. G, is the main lock bolt piece and can be better understood by referring to Fig. 4. K is the sliding spring knob case. M, is drawer knob or handle. H, is a tumbler to keep the main lock bolt piece in its proper position. Q is the key hole. Z is the spring for the purpose of throwing back the bolt lever into its proper position and to keep the bolt B pressed up into a cavity for its reception on the underside of the counterthe bolt G, also has a cavity in the underside of the counter for its reception. J, is a spring to keep the tumbler in its proper place in the operation of this drawer, it will be seen that by pressing against any one of the pins that should be in connection with the sliding piece D, it would cause the sliding piece to slide back against the lever E therefore causing the bolt to be withdrawn, and the drawer opened with ease, and by pushing any of the rest the alarm would be given by the ringing of the bell.

Fig. 2 is a view of the sliding spring knob case, showing the sliding spring knobs and their springs. K, is the sliding spring knob case. L, L, are the knobs. it shows the coiled springs used for the purpose of throwing the knobs outward after they have been pressed in these sliding spring knobs pass through the holes marked to in the plates R, and Gr, represented in Figs. 3 and 4. M, is the knob or handle of the drawer.

Fig. 3, represents the front plate of the iron case, it is perforated with holes marked on as is represented for the purpose of holding the sliding spring knobs in their proper places and to act as their guides. o is a spring for the purpose of moving the bolt piece whenit is locked or unlocked, and is operated in connection with the stud y in Fig. 4. H is the tumbler to keep the bolt piece in its proper position, and is kept in its own place by the spring J. Q, is the key hole.

Fig. 4 is a view of the bolt piece, it has holes to in it for the purpose of allowing the sliding spring knob to pass through to op erate the alarm, or to draw the bolt. lVhen this belt is down, or in other words unlocked, its holes to are in line With the holes 'w in plate R in Fig. 3, therefore allowing them to operate the inside works, but when locked it has revolved a portion of the way around on its axis thereby throwing the holes to out of line-in such a manner that the sliding spring knobs cannot slide through to draw the bolt or sound the alarm-therefore at the same time acts as a double lock.

Fig. 5 represents a lever for drawing the boltthe same as E, in Fig. 1.

Fig. 6, shows a lever of the same kind, the only difference is, that it has one more point for it to hinge uponthis lever is represented in this form as I may find it desirable to make them sobut at the same time it will not' alter the principle of the machine.

Fig. 7 is a view of the sliding notch wheel represented by F in Fig. 1Z, Z, are the holes to receive the shaft 0 in Fig. 1. b is the hole for pin 0 attached to bolt piece marked D to pass through.

Fig. 8, view of sliding bolt piece.

Fig. 9, View of the sliding spring catch which is operated by pressing the notch plate F against it by means of pins L, which disengage it from the slot in hammer wheelit has its sliding fulcra in the box frame, and is for the purpose of checking the alarm at each revolution of the wheel which puts the bell hammer in motion. This sliding spring catch works in a slot in the nave of the hammer wheel and is made to pass into the same when said slot arrives in a proper position, by the means of 'a coiled spring not shown in the drawings.

Fig. 10, shows the drawer slide so constructed that the cleats that sustain the drawer cannot be taken oif when the drawer is shut. The way this is accomplished, is by making them in the shape as shown in Fig. 12, with the screw holes placed upon the inside so that when the drawer is shut the screw heads cannot be reached.

Fig. 11, shows one of the slides such as are attached to the drawer itself.

Fig. 12, represents one of the cleats showing the groove for the slide 03 to slide in.

Having thus fully described the construction and operation of my invention, what I claim as new and desire to secure by Letters Patent is,

1. The main lock bolt G, or its equivalent used for the purposes as herein set forth and described.

2. The sliding notch wheel F for the purpose herein set forth and described.

3. The slide piece marked D when used in connection with sliding spring knobs L.

4. The sliding spring knobs L for the purpose herein set forth and described.

5. The sliding spring ratchet G, when used for the purpose set forth and described.

HORACE L. HERVEY. [1 s] Witnesses:

T. G. CLAYTON, J 0s. 0. CLAYTON. 

